The Nivada Grenchen F77 MK2 Black Opal celebrates the brand's centennial by reinterpreting the iconic 1970s integrated design with an exclusive natural black opal dial. The dark base is enlivened by blue, green, red, and purple reflections that shift with the light, creating unique plays of color and making every piece one-of-a-kind.
The 38mm 316L stainless steel case retains the distinct lines of the F77 collection. Inside beats the Swiss automatic La Joux-Perret G101 movement, with a frequency of 28,800 vibrations/hour, 24 jewels, and a 68-hour power reserve. The movement is visible through the sapphire crystal caseback, while water resistance up to 10 ATM ensures versatility for daily wear.
Each dial is unique: natural variations in color, grain, and texture of the stone may result in differences compared to the product images.
Dial: Natural black opal, polished silver-colored applied indices and white luminescent dots
Case diameter: 38 mm
Case thickness: 12.20 mm
Case material: 316L stainless steel
Lug-to-lug length: 46.2 mm
Caseback: Exhibition with sapphire crystal
Bracelet dimensions: 22 × 16 mm
Crown: Signed
Movement: La Joux-Perret G101 automatic, no-date version
Crystal: Domed sapphire on both sides with anti-reflective treatment
Water resistance: 10 ATM
Power reserve: 68 hours
Frequency: 28,800 vibrations per hour (4 Hz)
Functions: Analog hours, minutes, and central seconds with sweeping hand. Self-winding mechanism.
Jewels: 24
Origin: Swiss Made
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